The technique makes use of dualenergy X-ray imaging, where overlapping tissue signals can be isolated and quantified by exploiting the change in X-ray attenuation at different energies.
这项技术通过双能X-射线成像，重叠的组织信号可以被隔离，并利用不同能量的X射线的改变衰减量化。
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Dual-energy CT has also been shown to allow for improvements in image quality and reduction in artifacts such as beam hardening that have traditionally limited CT perfusion imaging(101).